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Question

what are minerals and what are the different types of minerals?

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Solution

Minerals can be divided as follows:

  • On the basis of economical value

1) Metallic- from which valuable metals (e.g. iron, copper) can be extracted for commercial use

2) Non Metallic-are valuable, not for the metals they contain, but for their properties as chemical compounds. Ex, halite for sodium chloride and borax for borates.

  • Mineral Deposits
  1. hydrothermal- formed when minerals are deposited by hot, aqueous solutions flowing through fractures and pore spaces of crustal rock
  2. magmatic-formed when minerals are deposited by hot, aqueous solutions flowing through fractures and pore spaces of crustal rock
  3. sedimentary-Water soluble salts can form sedimentary mineral deposits when they precipitate during evaporation of lake or seawater
  4. placer-Minerals with a high specific gravity (e.g. gold, platinum, diamonds) can be concentrated by flowing water in placer deposits found in stream beds and along shorelines.
  5. residual- formed form when weathering processes remove water soluble minerals from an area, leaving a concentration
    of less soluble minerals

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